CN109591620A - Control of Electric Vehicles method and device, electronic equipment and storage medium - Google Patents
Control of Electric Vehicles method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN109591620A CN109591620A CN201811405989.9A CN201811405989A CN109591620A CN 109591620 A CN109591620 A CN 109591620A CN 201811405989 A CN201811405989 A CN 201811405989A CN 109591620 A CN109591620 A CN 109591620A
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- electric car
- gear
- motor
- electric
- control
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/145—Structure borne vibrations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
This application involves a kind of Control of Electric Vehicles method and device, electronic equipment and storage mediums.Method includes: to determine the current gear of electric car when detecting electric car brake;When the current gear of electric car is no feedback gear, the motor of control electric car is rotated with the direction contrary with the current driving of electric car, spends strong, transmission main shaft gear and lay shaft gear until the corresponding motor shaft of motor is bonded transmission main shaft respectively.Electric car abnormal sound as caused by the gap between mechanical part in no feedback gear can be reduced using this method.
Description
Technical field
This application involves electric vehicle engineering fields, more particularly to a kind of Control of Electric Vehicles method and device, electronics
Equipment and storage medium.
Background technique
Due to electric energy cleaning, efficient and convenient advantage, it is widely applied in each field.For example, can be applicable to electronic
In automotive field, the discharge of pollutant can be reduced, improves efficiency of energy utilization.It is electronic as people are to the pay attention to day by day of environment
Automobile is becoming increasingly popular, and increasingly becomes the daily tool ridden instead of walk of people.
Electric car is under no feedback mode, and the feedback torque of motor is zero, due to the power drive system of electric car
Mechanical part in entire transmission chain there are mechanical clearance, will lead to vehicle from drive mode or other feedback modes convert to
It is easy to produce abnormal sound when no feedback mode (corresponding without feedback gear), however, can effectively solve electric car currently without one kind
The method of abnormal sound problem is easy to produce under no feedback mode.
Summary of the invention
Based on this, it is necessary to which the technical issues of being easy to produce abnormal sound under no feedback mode for above-mentioned electric car mentions
The Control of Electric Vehicles method and device of abnormal sound, electronic equipment can be reduced under no feedback mode for a kind of electric car and deposited
Storage media.
A kind of Control of Electric Vehicles method, which comprises
When detecting electric car brake, the current gear of the electric car is determined;
When the current gear of the electric car is no feedback gear, control the motor of the electric car with it is described
The direction that the current driving of electric car is contrary rotates, until the corresponding motor shaft of the motor is bonded speed changer master respectively
Axis spends strong, transmission main shaft gear and lay shaft gear.
A kind of electric automobile control device, described device include:
Gear determining module, for determining the current gear of the electric car when detecting electric car brake;
Control module controls the electric car when for the current gear in the electric car for no feedback gear
Motor rotated with the direction contrary with the current driving of the electric car, until the motor corresponding motor shaft point
Not Tie He transmission main shaft spend strong, transmission main shaft gear and lay shaft gear.
A kind of electronic equipment, including memory and processor, the memory are stored with computer program, the processor
The step of realizing the above method when executing the computer program.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
The step of above method is realized when row.
Above-mentioned Control of Electric Vehicles method and device, electronic equipment and storage medium are detecting electric car brake, and
And the current gear of electric car for no feedback gear when, control the motor of electric car with the current driving side with electric car
Rotate in the opposite direction, until the corresponding motor shaft of motor be bonded respectively transmission main shaft spend strong, transmission main shaft gear with
And lay shaft gear, strong, transmission main shaft gear and speed changer pair are spent with transmission main shaft in this way, can avoid motor shaft
Gap between shaft gear, i.e. gap between reduction mechanical part, so as to reduce between the mechanical part because of electric car
There are abnormal sounds caused by mechanical clearance.
Detailed description of the invention
Fig. 1 is the flow diagram of Control of Electric Vehicles method in one embodiment;
Fig. 2 is the flow diagram of Control of Electric Vehicles method in another embodiment;
Fig. 3 is the structural block diagram of electric automobile control device in one embodiment;
Fig. 4 is the internal structure chart of electronic equipment in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, as shown in Figure 1, providing a kind of Control of Electric Vehicles method, this method can be applied to electricity
Electrical automobile, including step S110-S120.
S110: when detecting electric car brake, the current gear of electric car is determined.
Electric car has different gears, and electric car is in different stalls, can carry out the control of friction speed, i.e. shelves
Position is for controlling speed changer.For example, the gear of electric car mainly includes P grades, R grades, D grades and N grades etc..P grades are parking position switch,
It is flame-out to park or use when electric car is static, electric car of make suring when with P grades remain stationary state, otherwise make electric car
It is damaged.R grades are reverse gear, this shelves also must can be just entered after electric car is totally stationary.N grades (correspond to this implementation for neutral gear
Without feedback gear in example), vehicle uses when suspending, but chance slope must touch on the brake.D grades are drive shift, are travelled in general road
It uses, it can be according to different road surfaces and load auto-changing to suitable gear.
In the present embodiment, for eliminate electric car in no feedback gear as caused by the gap between mechanical part
Abnormal sound, it is necessary first to detect whether electric car has brake.When touching on the brake, the braking system of electric car can send brake letter
Number electric machine controller is given, electric machine controller can received by detecting whether to receive judgement of the brake information to brake
To brake information when, label detection to electric car brake.At this time, it may be determined that the gear that electric car is presently in.
S120: when the current gear of electric car is no feedback gear, control the motor of electric car with electronic vapour
The direction that the current driving of vehicle is contrary rotates, and spends strong, change until the corresponding motor shaft of motor is bonded transmission main shaft respectively
Fast device mainshaft gear and lay shaft gear.
In electric car, including electric machine controller, motor, speed changer and wheel, electric machine controller are connected to motor, electricity
Machine is connect with speed changer, and speed changer is connect with wheel, and motor has motor shaft.Electric machine controller can control motor according to setting
Direction, speed, angle, response time work, and specifically, electric machine controller can be instructed according to gear, throttle, brake etc.
(throttle commands can be generated by stepping on accelerator pedal, and brake instruction (i.e. brake information) can be generated by stepping on brake pedal) is by power
Electric energy needed for the electric energy that battery is stored is converted into driving motor, to control the starting operation of electric car, advance and retreat speed, climb
The driving status such as slope dynamics, or electric car brake is helped, and by the storage of part brake energy into power battery.Speed changer
Refer to and be used to change the revolving speed from motor and the mechanism of torque, is capable of fixing or stepping changes output shaft and input shaft transmission ratio, again
Claim gearbox.Transmission ratio can be changed by speed changer, and in the constant situation in motor direction of rotation, automobile is enable to fall back traveling,
And using neutral gear, power transmitting is interrupted, so that motor can start, idling, and convenient for shifting of transmission or carry out power
Output.The input shaft of speed changer is also known as transmission main shaft, can be equipped with splined shaft, i.e. transmission main shaft spline on transmission main shaft.
Transmission main shaft can be equipped with gear, i.e. transmission main shaft gear.The output shaft of speed changer is also known as lay shaft, speed changer pair
Axis can also be equipped with gear, i.e. lay shaft gear.
Drive mode refers to that dynamical system exports energy in electric car, the mould for pushing electric car to travel forward or backward
Formula.For electric car, in normal driving, release the gas pedal or brake pedal is stepped on, dynamical system no longer exports energy, such as
Fruit electric car integrality allows to power battery charging, and normal mechanical energy can reversely be converted into electricity by determining Force system
Energy.No feedback mode refers to electronic vehicle attitude not and allows to convert mechanical energy to electric energy, the intelligent unpowered cunning of electric car
Row, or slow down under brake pedal effect, i.e., N grades are equivalent to without feedback mode.Other feedback modes may include strong feedback mould
Formula, general feedback mode, weak feedback mode, are converted into the intensity of electric energy by mechanical energy respectively or size determine.
Electric machine controller when that is, electric machine controller receives brake information, can determine whether electronic vapour when detection has brake signal
Whether vehicle but money are in no feedback gear, if so, the current gear of i.e. electric car is no feedback gear, at this point, electric car
In motor shaft existing gap between strong, transmission main shaft gear and lay shaft gear is spent with transmission main shaft respectively
It is be easy to cause abnormal sound, then needs to apply feedback torque to motor, to eliminate abnormal sound.Specifically, electric machine controller controls electronic vapour
The motor of vehicle is rotated with the direction contrary with the current driving of electric car, and motor shaft is made to be bonded transmission main shaft flower respectively
Strong, transmission main shaft gear and lay shaft gear, in this way, can avoid motor shaft spends strong, change with transmission main shaft respectively
Gap between fast device mainshaft gear and lay shaft gear reduces electric car and goes to from drive mode or other modes
Abnormal sound when without feedback mode.
Above-mentioned Control of Electric Vehicles method is detecting electric car brake, and the current gear of electric car is nothing
When feedback gear, controls the motor of electric car and rotated with the direction contrary with the current driving of electric car, Zhi Dao electricity
The corresponding motor shaft of machine is bonded transmission main shaft respectively and spends strong, transmission main shaft gear and lay shaft gear, in this way, can
It avoids motor shaft and transmission main shaft from spending the gap between strong, transmission main shaft gear and lay shaft gear, that is, reduces
Gap between mechanical part, so as to reduce between the mechanical part because of electric car there are mechanical clearance caused by abnormal sound.
In one embodiment, electric machine controller can determine the current gear of electric car based on shift switch signal, can
The selection to the mode of electric car is realized in operation based on the shift switch key group on exchange block pannel.Exchange can be responded
The selection operation of position switch key group obtains shift switch signal (CAN signal, controller LAN signal), then will shift
Switching signal is sent to electric machine controller, and electric machine controller can determine the gear of electric car based on shift switch signal.
In one embodiment, the motor of electric car is controlled with the direction contrary with the current driving of electric car
Rotation, comprising:
Opposing torque is exported to motor, controls the motor of electric car with contrary with the current driving of electric car
Direction rotates.
When detecting electric car brake, and electric car is in no feedback mode, and it is exportable reversed to click controller
To motor, the direction that motor can be contrary with the current driving of electric car under the action of opposing torque rotates torque,
I.e. motor torsional direction is with vehicle driving direction on the contrary, spending strong, transmission main shaft until motor shaft is bonded transmission main shaft respectively
Gear and lay shaft gear can also make powerdriven movement in this way, there will be neither the generation of practical feedback energy
Part is in a kind of stable state, that is, the mechanical part that can avoid electric car is different with air gap effect generation under non-power state
It rings.
In one embodiment, the range of opposing torque is [1,10] ox rice.It is lesser to be given to motor application one
Feedback torque, reversely rotates motor, with ensure motor shaft be bonded respectively transmission main shaft spend strong, transmission main shaft gear and
Lay shaft gear.The mechanical part situation of different electric cars is different, and opposing torque is specifically worth can be according to electric car
The matching of situation itself determines.
In one embodiment, method further include: be zero in the speed for detecting electric car or detected throttle letter
Number when, stop to motor export opposing torque.
Speed is that zero expression electric car is static, does not need to apply torque, at this time, it may be necessary to execute opposing torque elimination.Have
Throttle signal indicates that electric car is in drive mode, is not located at no feedback mode, it is therefore desirable to execute opposing torque elimination, i.e.,
Electric machine controller stops exporting opposing torque to motor, in this way, motor can not obtain the opposing torque, to ensure that electric car exists
Normally travel under drive mode, or ensure that it normally remain stationary.
The process of above-mentioned Control of Electric Vehicles method is illustrated with a specific implementation below.
As shown in Fig. 2, electric car is in the process of moving, when electric machine controller has detected brake, i.e. electric machine controller
When receiving brake information, judge whether electric car is currently in no feedback mode, if so, electric machine controller is applied to motor
Add range in the feedback torque (i.e. opposing torque) of [1,10] ox rice, driving motor is with the direction opposite with vehicle driving direction
Rotation, spends strong, transmission main shaft gear and lay shaft gear until motor shaft is bonded transmission main shaft respectively, so may be used
The air gap between powerdriven movement parts is eliminated, to can avoid movement parts and air gap effect generation abnormal sound.
Be zero in the speed for detecting electric car, or when having throttle signal, indicate electric car be in stationary state or
Drive mode is not in no feedback mode, at this point, can eliminate the torque applied for motor, i.e., electric machine controller stops to electricity
Machine exports above-mentioned feedback torque, in this way, motor is no longer rotated with the direction opposite with vehicle driving direction, to ensure electric car
Normally travel in the drive mode, or ensure that it normally remain stationary.
It should be understood that although each step in the flow chart of Fig. 1-2 is successively shown according to the instruction of arrow,
These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 1-2
Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately
It executes.
In one embodiment, as shown in figure 3, providing a kind of electric automobile control device, comprising:
Gear determining module 310, for determining the current gear of electric car when detecting electric car brake;
Control module 320 controls the motor of electric car when for the current gear in electric car for no feedback gear
It is rotated with the direction contrary with the current driving of electric car, until the corresponding motor shaft of motor is bonded speed changer master respectively
Axis spends strong, transmission main shaft gear and lay shaft gear.
In one embodiment, control module, when for the current gear in electric car for no feedback gear, output is anti-
To torque to motor, controls the motor of electric car and rotated with the direction contrary with the current driving of electric car.
In one embodiment, the range of opposing torque is [1,10] ox rice.
In one embodiment, device further include:
Stopping modular stops when for being zero in the speed for detecting electric car or detected throttle signal to electricity
Machine exports opposing torque.
Specific about electric automobile control device limits the limit that may refer to above for Control of Electric Vehicles method
Fixed, details are not described herein.Modules in above-mentioned electric automobile control device can fully or partially through software, hardware and its
Combination is to realize.Above-mentioned each module can be embedded in the form of hardware or independently of in the processor in electronic equipment, can also be with
Software form is stored in the memory in electronic equipment, executes the corresponding behaviour of the above modules in order to which processor calls
Make.
In one embodiment, a kind of electronic equipment is provided, which can be the motor control in electric car
Device processed, internal structure chart can be as shown in Figure 4.The electronic equipment includes processor, the memory connected by system bus
And network interface.Wherein, the processor of the electronic equipment is for providing calculating and control ability.The memory packet of the electronic equipment
Include non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system and computer program.This is interior
Memory provides environment for the operation of operating system and computer program in non-volatile memory medium.The net of the electronic equipment
Network interface is used to communicate with external terminal by network connection.To realize a kind of electricity when the computer program is executed by processor
Electrical automobile control method.
It will be understood by those skilled in the art that structure shown in Fig. 4, only part relevant to application scheme is tied
The block diagram of structure, does not constitute the restriction for the electronic equipment being applied thereon to application scheme, and specific electronic equipment can be with
Including than more or fewer components as shown in the figure, perhaps combining certain components or with different component layouts.
In one embodiment, a kind of electronic equipment is provided, including memory and processor, memory are stored with computer
The step of program, processor realizes the above method when executing computer program.
In one embodiment, a kind of computer readable storage medium is provided, computer program, computer are stored thereon with
The step of above method is realized when program is executed by processor.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, it is readable which can be stored in a non-volatile computer
It takes in storage medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, this Shen
Please provided by any reference used in each embodiment to memory, storage, database or other media, may each comprise
Non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the application, and the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from the application design, various modifications and improvements can be made, these belong to the protection scope of the application.
Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of Control of Electric Vehicles method, which comprises
When detecting electric car brake, the current gear of the electric car is determined;
When the current gear of the electric car is no feedback gear, control the motor of the electric car with it is described electronic
The direction that the current driving of automobile is contrary rotates, until the corresponding motor shaft of the motor is bonded transmission main shaft flower respectively
Strong, transmission main shaft gear and lay shaft gear.
2. the method according to claim 1, wherein it is described control electric car motor with the electronic vapour
The direction that the current driving of vehicle is contrary rotates, comprising:
Opposing torque is exported to the motor, controls the motor of the electric car with the current driving side with the electric car
It rotates in the opposite direction.
3. according to the method described in claim 2, it is characterized in that, the range of the opposing torque is [1,10] ox rice.
4. according to the method described in claim 2, it is characterized in that, the method also includes:
When detecting that the speed of the electric car is zero or has detected throttle signal, stop exporting to the motor reversed
Torque.
5. a kind of electric automobile control device, which is characterized in that described device includes:
Gear determining module, for determining the current gear of the electric car when detecting electric car brake;
Control module controls the electricity of the electric car when for the current gear in the electric car for no feedback gear
Machine is rotated with the direction contrary with the current driving of the electric car, until the corresponding motor shaft of the motor pastes respectively
It closes transmission main shaft and spends strong, transmission main shaft gear and lay shaft gear.
6. device according to claim 5, which is characterized in that the control module, for working as in the electric car
When preceding gear is no feedback gear, output opposing torque to the motor, control the motor of the electric car with the electricity
The direction that the current driving of electrical automobile is contrary rotates.
7. device according to claim 6, which is characterized in that the range of the opposing torque is [1,10] ox rice.
8. device according to claim 6, which is characterized in that described device further include:
Stopping modular, for when detecting that the speed of the electric car is zero or has detected throttle signal, stopping to institute
State motor output opposing torque.
9. a kind of electronic equipment, including memory and processor, the memory are stored with computer program, which is characterized in that
The step of processor realizes any one of claims 1 to 4 the method when executing the computer program.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of method described in any one of Claims 1-4 is realized when being executed by processor.
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CN201811405989.9A CN109591620B (en) | 2018-11-23 | 2018-11-23 | Electric vehicle control method and device, electronic equipment and storage medium |
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CN201811405989.9A CN109591620B (en) | 2018-11-23 | 2018-11-23 | Electric vehicle control method and device, electronic equipment and storage medium |
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CN203358355U (en) * | 2013-07-18 | 2013-12-25 | 安徽江淮汽车股份有限公司 | Control system capable of reducing abnormal sound of electric car motor drive system |
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